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             Publication
Journal Publication
Research Title Impact of tree plantations on soil characteristic in Northern Laos 
Date of Distribution 12 September 2018 
Conference
     Title of the Conference RESEARCH PERSPECTIVES ON THE IMPACT OF RAPID LAND USE CHANGE ON ECOSYSTEM SERVICE IN THE CONTEXT OF CLIMATECHANGE AND ECONOMIC TRANSFORMATION OF THE LOWER MEKONG BASIN 
     Organiser LMI LUSES - JEAI ECORUBBER - STOCK CANSEA 
     Conference Place at The Lao-Japan Institute, National University of Laos, Dong Dok campus, Vientiane, Laos 
     Province/State  
     Conference Date 12 September 2018 
     To 13 September 2018 
Proceeding Paper
     Volume ืno volume 
     Issue no issue 
     Page no page 
     Editors/edition/publisher IRD 
     Abstract Tree plantation has become an important cultivation for farmer of northern Laos where it has replaced a large share of traditional upland rice cultivation. However, this plantation is on the mountain that may cause the soil degradation in long term land use. Therefore, this study aimed to assess soil fertility after long period of tree plantation. The experimental area of this study was: 12-years old rubber plantations, teak plantation and natural forest as the comparing study. Soil fertility was determined by chemical methods in six layers 0-10, 10-20, 30-40, 60-70, 100-110 and 150-160 cm depth. We found that long term tree plantation still have lower soil fertility compared to natural forest. Organic carbon and total nitrogen were lower in rubber tree plantations than in the forest and teak tree plantation. Available P and exchangeable K tended to decrease on the top soil. Tree plantations were not effect to soil pH. So soil mulching is required in case of sustainable land use, in case of farmer need to change to the other alternative crop if natural rubber provides low benefit. 
Author
577030026-5 Mr. XAYSATITH SOULIYAVONGSA [Main Author]
Agriculture Doctoral Degree

Peer Review Status ไม่มีผู้ประเมินอิสระ 
Level of Conference นานาชาติ 
Type of Proceeding Abstract 
Type of Presentation Oral 
Part of thesis true 
Presentation awarding false 
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